examples/opengl/grabber/glwidget.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 06 Jul 2010 15:10:48 +0300
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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**   * Redistributions of source code must retain the above copyright
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**     notice, this list of conditions and the following disclaimer.
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**   * Redistributions in binary form must reproduce the above copyright
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**     notice, this list of conditions and the following disclaimer in
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**     the documentation and/or other materials provided with the
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**     distribution.
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**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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**     the names of its contributors may be used to endorse or promote
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**     products derived from this software without specific prior written
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**     permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef GLWIDGET_H
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#define GLWIDGET_H
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#include <QGLWidget>
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class GLWidget : public QGLWidget
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{
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    Q_OBJECT
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public:
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    GLWidget(QWidget *parent = 0);
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    ~GLWidget();
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    int xRotation() const { return xRot; }
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    int yRotation() const { return yRot; }
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    int zRotation() const { return zRot; }
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public slots:
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    void setXRotation(int angle);
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    void setYRotation(int angle);
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    void setZRotation(int angle);
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signals:
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    void xRotationChanged(int angle);
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    void yRotationChanged(int angle);
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    void zRotationChanged(int angle);
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protected:
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    void initializeGL();
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    void paintGL();
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    void resizeGL(int width, int height);
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    void mousePressEvent(QMouseEvent *event);
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    void mouseMoveEvent(QMouseEvent *event);
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private slots:
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    void advanceGears();
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private:
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    GLuint makeGear(const GLfloat *reflectance, GLdouble innerRadius,
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                    GLdouble outerRadius, GLdouble thickness,
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                    GLdouble toothSize, GLint toothCount);
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    void drawGear(GLuint gear, GLdouble dx, GLdouble dy, GLdouble dz,
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                  GLdouble angle);
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    void normalizeAngle(int *angle);
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    GLuint gear1;
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    GLuint gear2;
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    GLuint gear3;
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    int xRot;
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    int yRot;
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    int zRot;
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    int gear1Rot;
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    QPoint lastPos;
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};
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#endif